#5264: [with patch, needs review] optimize small permgroup elements
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Reporter: robertwb | Owner: joyner
Type: defect | Status: new
Priority: major | Milestone: sage-3.4.1
Component: group_theory | Resolution:
Keywords: |
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Comment (by robertwb):
Before:
{{{
sage: G = SymmetricGroup(3)
sage: L = [G.random_element() for _ in range(100)] * 17
sage: timeit("prod(L)")
625 loops, best of 3: 651 µs per loop
sage: G = SymmetricGroup(10)
sage: L = [G.random_element() for _ in range(100)] * 17
sage: timeit("prod(L)")
625 loops, best of 3: 766 µs per loop
sage: G = SymmetricGroup(20)
sage: L = [G.random_element() for _ in range(100)] * 17
sage: timeit("prod(L)")
625 loops, best of 3: 854 µs per loop
}}}
After:
{{{
sage: sage: G = SymmetricGroup(3)
sage: sage: L = [G.random_element() for _ in range(100)] * 17
sage: sage: timeit("prod(L)")
625 loops, best of 3: 485 µs per loop
sage: sage: G = SymmetricGroup(10)
sage: sage: L = [G.random_element() for _ in range(100)] * 17
sage: sage: timeit("prod(L)")
625 loops, best of 3: 564 µs per loop
sage: sage: G = SymmetricGroup(20)
sage: sage: L = [G.random_element() for _ in range(100)] * 17
sage: sage: timeit("prod(L)")
625 loops, best of 3: 876 µs per loop
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5264#comment:1>
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